Privacy Policy

If you create an account, we collect your email and authentication identifiers so your library and training log sync across devices.

We generate an anonymous device identifier to attribute your saved workouts and enforce plan limits.

When you save a workout, we process the video link you share and the resulting workout details (exercises, sets, reps, muscle groups, creator name). Your onboarding answers — training level, goal, and days per week — and the sessions you log are stored with your account.

If you use the Advisor, Stackhero processes your question and may include your training level and goal to generate a cited answer.

Subscription and diagnostic services may process purchase status, paywall events, feature usage, and attribution data.

We use your information to turn shared videos into structured workouts, sync your library and training log, track your progress, answer Advisor questions, provide subscription access, and improve the app.

The Advisor uses your question and, optionally, your training level and goal only to look up sources and generate the answer you requested.

We do not sell your data, use it for advertising, or share it with data brokers.

With your permission, Stackhero reads your workout sessions from Apple Health to show your training streaks and weekly consistency. This is read-only.

Your Apple Health data stays on your device — we never upload it to our servers, sell it, or use it for advertising. You can turn access off at any time in the Health app.

Your training-log check-ins and any progress photos you add are stored only on your device. They are never uploaded to our servers.

Stackhero uses Supabase for backend hosting and authentication. Data is transmitted over HTTPS/TLS, and account-linked database access is protected with row-level security.

To build a workout, the video link you share is downloaded and analyzed on our servers. We use server-side provider keys; these keys are not included in the mobile app.

We may use providers including Supabase (backend and auth), Adapty (subscriptions and paywall analytics), OpenRouter and model providers such as Google Gemini and Anthropic (turning videos into workouts and answering Advisor questions), and PubMed/NCBI for Advisor source lookup.

These providers process data only as needed to provide app functionality, subscriptions, research lookup, or AI features.

You can revoke camera and notification permissions in iOS Settings.

You can delete your account and all account-linked data at any time from Profile → Delete account, or contact us for help.

Stackhero is not intended for children under 13, and we do not knowingly collect personal information from children.

Stackhero is operated by Space Cadet d.o.o., Ulica Ivana Šibla 17, 10000 Zagreb, Croatia.

For privacy questions, contact privacy@stackhero.app.